Electrolytic chlorate electrode assembly

Abstract

The utility model discloses an electrolytic chlorate electrode assembly which comprises an anode assembly, a cathode assembly, a first bipolar assembly, a second bipolar assembly, an insulating snap fastener and an insulating screw, the electrode assembly is composed of an anode assembly, a plurality of first repolarization assemblies, a plurality of second repolarization assemblies,..., a plurality of first repolarization assemblies and a plurality of second repolarization assemblies, and the first repolarization assemblies are installed in a crossed mode through insulation snap fasteners, insulation screws and insulation gaskets. The anode is a chlorine evolution titanium anode with high chlorine evolution catalytic activity, chlorine can be stably and efficiently separated out for a long time, the cathode is made of a high hydrogen evolution material, hydrogen can be stably separated out for a long time, and the hydrogen embrittlement resistance is good. And the bipolar design is adopted, so that current is effectively reduced, conductive connection and line loss are reduced, and current efficiency is improved. The plastic screws, the gaskets and the snap fasteners which are good in insulation and corrosion resistance are adopted, and installation and maintenance are convenient and fast. The modular design is adopted, customization of different series stages can be achieved according to parameters such as yield and power supply, and cost reduction is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of chlorate electrolysis components, and particularly relates to an electrolytic chlorate electrode group. Background Art

[0002] In the continuous development of electrochemical chlorine evolution applications, the electrolytic method for producing chlorate has become the main method for producing chlorate due to its green and safe advantages. Compared with the traditional chemical method, the raw materials of the electrolytic method are only salt and water, and the saturated brine is electro-oxidized to produce chlorate by an anode with electrocatalytic activity.

[0003] At present, the design of chlorate electrodes is relatively large, and installation and maintenance are relatively difficult. For example, if some electrodes are damaged, they need to be completely removed for repair, increasing the work difficulty and intensity. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electrolytic chlorate electrode group, which adopts a bipolar design, and the anode and cathode are made of materials and coatings with better electrocatalytic activity to achieve the purpose of energy conservation and consumption reduction. The specific technical solutions are as follows:

[0005] An electrolytic chlorate electrode group includes an anode assembly, a bipolar assembly, and a cathode assembly arranged in sequence; wherein, the anode assembly includes an anode end flange and a plurality of anodes arranged at intervals on one side of the anode end flange, the cathode assembly includes a cathode end flange and a plurality of cathodes arranged at intervals on one side of the cathode end flange, and the bipolar assembly includes a bipolar connector, a plurality of anodes arranged at intervals on one side of the bipolar connector, and a plurality of cathodes arranged at intervals on the other side of the bipolar connector; the plurality of anodes in the anode assembly and the plurality of cathodes in the bipolar assembly are alternately inserted with each other, the plurality of anodes in the bipolar assembly and the plurality of cathodes in the cathode assembly are alternately inserted with each other, and there is a gap between adjacent anodes and cathodes after the alternate insertion.

[0006] The number of the above bipolar assemblies can be one or more.

[0007] Preferably, the number of the bipolar assemblies is multiple and they are arranged adjacent to each other in sequence from beginning to end. The plurality of anodes and the plurality of cathodes in adjacent bipolar assemblies are alternately inserted with each other, and there is a gap between adjacent anodes and cathodes after the alternate insertion; the plurality of anodes in the anode assembly and the plurality of cathodes in the first bipolar assembly are alternately inserted with each other, and the plurality of anodes in the last bipolar assembly and the plurality of cathodes in the cathode assembly are alternately inserted with each other.

[0008] Preferably, the bipolar assembly includes bipolar assembly one and bipolar assembly two which are alternately arranged in sequence from head to tail, and the first and the last bipolar assemblies are both bipolar assembly one.

[0009] Preferably, the number of anodes on the anode assembly is N, the number of cathodes on the cathode assembly is N, the number of anodes and cathodes of the bipolar assembly one are both N + 1, and the number of anodes and cathodes of the bipolar assembly two are both N.

[0010] In an electrolytic chlorate electrode group of the present utility model, a plurality of mounting connection holes are respectively arranged on the anodes and cathodes of the bipolar assembly, and there are also insulating screws for connecting and fixing adjacent bipolar assemblies among a plurality of bipolar assemblies, insulator female buttons for connecting and fixing between the anode assembly and the bipolar assembly, and insulator female buttons for connecting and fixing between the bipolar assembly and the cathode assembly; after the anodes and cathodes between adjacent bipolar assemblies are alternately inserted into each other, the connection and fixation between adjacent bipolar assemblies are realized through the insulating screws passing through the mounting connection holes; female buttons in the insulator female buttons are respectively installed in the mounting connection holes on the cathodes of the bipolar assemblies connected to the anode assembly and in the mounting connection holes on the anodes of the bipolar assemblies connected to the cathode assembly, and male buttons in the insulator female buttons are respectively fixedly arranged on the anodes of the anode assembly and the cathodes of the cathode assembly, and the connection and fixation between the anode assembly and the bipolar assembly and between the bipolar assembly and the cathode assembly are realized through the combination of the corresponding female buttons and male buttons in the insulator female buttons.

[0011] In the present utility model, the insulating screw is also sleeved with an insulating gasket, and the insulating gasket is arranged at the position between the adjacent anodes and cathodes which are alternately inserted into each other on the bipolar assembly, and nuts are connected to both ends of the insulating screw; flange mounting holes one are arranged on the anode end flange, and flange mounting holes two are arranged on the cathode end flange.

[0012] Preferably, the anode assembly is an anode assembly made of titanium material, the cathode assembly is a cathode assembly made of stainless steel or carbon steel material, the bipolar assembly is a bipolar assembly with a titanium-steel composite structure, the insulator female button is an insulator female button made of PVDF or PTFE material, the insulating screw is an insulating screw made of PVDF or PTFE material, and the insulating gasket is an insulating gasket made of PVDF or PTFE material.

[0013] Preferably, the anode in the anode assembly serves as Anode 1, and Anode 1 is welded to the anode end flange with a controlled fixed spacing; the cathode in the cathode assembly serves as Cathode 1, and Cathode 1 is welded to the cathode end flange with a controlled fixed spacing; the bipolar connecting member in the first bipolar assembly serves as Bipolar Connecting Member 1, the anode in the first bipolar assembly serves as Anode 2, Anode 2 is welded to one side position of Bipolar Connecting Member 1 with a controlled fixed spacing, the cathode in the first bipolar assembly serves as Cathode 2, and Cathode 2 is welded to the other side position of Bipolar Connecting Member 1 with a controlled fixed spacing; the bipolar connecting member in the second bipolar assembly serves as Bipolar Connecting Member 2, the anode in the second bipolar assembly serves as Anode 3, Anode 3 is welded to one side position of Bipolar Connecting Member 2 with a controlled fixed spacing, the cathode in the second bipolar assembly serves as Cathode 3, and Cathode 3 is welded to the other side position of Bipolar Connecting Member 2 with a controlled fixed spacing.

[0014] Preferably, the anode is a titanium-based noble metal oxide coated electrode, the cathode is a stainless steel, carbon steel or Hastelloy electrode, the bipolar connecting member is a bipolar connecting member with a titanium-steel composite structure, and a titanium-based ruthenium oxide coated electrode serving as the anode and a stainless steel, carbon steel or Hastelloy electrode serving as the cathode are respectively welded at both ends of the bipolar connecting member.

[0015] Preferably, the anode is a titanium-based ruthenium oxide coated electrode.

[0016] In the present utility model, the anode assembly, the bipolar assembly and the cathode assembly are arranged in sequence along the longitudinal direction of the electrolytic cell in the electrolytic cell, and a plurality of anodes and a plurality of cathodes are arranged in an interdigitated manner along the longitudinal direction of the electrolytic cell body.

[0017] In the present utility model, the bipolar assembly is installed inside the cell body, and then the anode assembly and the cathode assembly are installed at both ends of the cell body; the inner sides of the first flange mounting hole and the second flange mounting hole are respectively connected to the anode side and the cathode side of the cell body, and the outer sides are connected to the positive and negative input terminals of the DC power supply through cables or copper bars.

[0018] The beneficial effects of the present utility model are:

[0019] First, for an electrolytic chlorate electrode group of the present utility model, anodes and cathodes of different materials are combined. The anode uses a chlorine-evolving titanium anode with high chlorine-evolving catalytic activity, which can stably and efficiently evolve chlorine for a long time. The cathode uses a high hydrogen-evolving material, which can stably evolve hydrogen for a long time and has good "hydrogen embrittlement" resistance.

[0020] Second, for an electrolytic chlorate electrode group of the present utility model, a bipolar design is adopted, which effectively reduces the current, reduces the conductive connection and line loss, and improves the current efficiency.

[0021] Thirdly, for an electrolytic chlorate electrode group of the present utility model, plastic screws, gaskets and male-female fasteners with good insulation and corrosion resistance are adopted, and the installation and maintenance are convenient.

[0022] Fourthly, for an electrolytic chlorate electrode group of the present utility model, a plurality of anodes and a plurality of cathodes are arranged in an inserted manner longitudinally along the electrolytic cell body, which can greatly increase the total effective area of the anodes and cathodes, thereby improving the electrolysis efficiency per unit cell volume; by adopting a modular design, customization of different series connection levels can be realized according to parameters such as production capacity and power supply, which is beneficial to cost reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an electrolytic chlorate electrode group of the present utility model;

[0024] Figure 2 is a schematic assembly diagram of the anode assembly, the first bipolar assembly, the second bipolar assembly and the cathode assembly.

[0025] Figure 3 is a comparison schematic diagram of the cathode or anode in the anode assembly, the cathode assembly and the bipolar assembly.

[0026] Figure 4 is a comparison schematic diagram of the anode assembly and the cathode assembly.

[0027] Figure 5 is a comparison schematic diagram of the first bipolar assembly and the second bipolar assembly.

[0028] In the figure: 1. Anode assembly, 2. Cathode assembly, 3. First bipolar assembly, 4. Second bipolar assembly, 5. Insulator female fastener, 6. Insulating screw, 7. Installation connection hole, 11. Anode 1, 12. Anode end flange, 121. First flange installation hole, 21. Cathode 1, 22. Cathode end flange, 221. Second flange installation hole, 31. Anode 2, 32. Cathode 2, 33. First bipolar connector, 41. Anode 3, 42. Cathode 3, 43. Second bipolar connector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0030] As Figures 1 to 5The figure shows an embodiment of an electrolytic chlorate electrode group of the present utility model, which includes an anode assembly 1, a bipolar assembly, and a cathode assembly 2 arranged in sequence; wherein, the anode assembly 1 includes an anode end flange 12 and a plurality of anodes arranged at intervals on one side of the anode end flange 12, the cathode assembly 2 includes a cathode end flange 22 and a plurality of cathodes arranged at intervals on one side of the cathode end flange 22, and the bipolar assembly includes a bipolar connecting member, a plurality of anodes arranged at intervals on one side of the bipolar connecting member, and a plurality of cathodes arranged at intervals on the other side of the bipolar connecting member; the plurality of anodes in the anode assembly 1 and the plurality of cathodes in the bipolar assembly are arranged in an alternating and inserted manner, the plurality of anodes in the bipolar assembly and the plurality of cathodes in the cathode assembly 2 are arranged in an alternating and inserted manner, and there is a gap between adjacent anodes and cathodes after the alternating and inserted arrangement.

[0031] The number of the above bipolar assemblies can be one or more.

[0032] Preferably, the number of the bipolar assemblies is multiple and they are arranged adjacent to each other in a head-to-tail arrangement manner. The plurality of anodes and the plurality of cathodes in adjacent bipolar assemblies arranged adjacent to each other are arranged in an alternating and inserted manner, and there is a gap between adjacent anodes and cathodes after the alternating and inserted arrangement; the plurality of anodes in the anode assembly and the plurality of cathodes in the first bipolar assembly among the bipolar assemblies are arranged in an alternating and inserted manner, and the plurality of anodes in the last bipolar assembly among the bipolar assemblies and the plurality of cathodes in the cathode assembly are arranged in an alternating and inserted manner.

[0033] Preferably, the bipolar assembly includes a first bipolar assembly 3 and a second bipolar assembly 4 arranged alternately in sequence in the head-to-tail direction, and the first bipolar assembly and the last bipolar assembly are both the first bipolar assembly 3.

[0034] Preferably, the number of anodes on the anode assembly 1 is N, the number of cathodes on the cathode assembly 2 is N, the number of anodes and cathodes of the first bipolar assembly 3 is both N + 1, and the number of anodes and cathodes of the second bipolar assembly 4 is both N.

[0035] In an electrolytic chlorate electrode group of this embodiment, a plurality of mounting connection holes 7 are respectively arranged on the anode and cathode of the bipolar assembly. There are also insulating screws 6 for connecting and fixing adjacent bipolar assemblies among a plurality of bipolar assemblies, an insulator female buckle 5 for connecting and fixing between the anode assembly 1 and the bipolar assembly, and an insulator female buckle 5 for connecting and fixing between the bipolar assembly and the cathode assembly 2; after the anodes and cathodes of adjacent bipolar assemblies are alternately inserted into each other, the connection and fixation between adjacent bipolar assemblies are realized through the insulating screws 6 passing through the mounting connection holes 7; female buckles in the insulator female buckle 5 are respectively installed in the mounting connection holes 7 on the cathode of the bipolar assembly connected to the anode assembly 1 and in the mounting connection holes 7 on the anode of the bipolar assembly connected to the cathode assembly 2. Male buckles in the insulator female buckle 5 are respectively fixed on the anode of the anode assembly 1 and the cathode of the cathode assembly 2. The connection and fixation between the anode assembly 1 and the bipolar assembly and between the bipolar assembly and the cathode assembly 2 are realized through the combination of the corresponding female and male buckles in the insulator female buckle 5.

[0036] In this embodiment, the insulating screw 6 is also sleeved with an insulating gasket, and the insulating gasket is arranged at the position between adjacent anodes and cathodes arranged alternately on the bipolar assembly. Nuts are connected to both ends of the insulating screw; a first flange mounting hole 121 is arranged on the anode end flange 12, and a second flange mounting hole 221 is arranged on the cathode end flange 22.

[0037] Preferably, the anode assembly 1 is an anode assembly made of titanium material, the cathode assembly 2 is a cathode assembly made of stainless steel or carbon steel material, the bipolar assembly is a bipolar assembly with a titanium-steel composite structure, the insulator female buckle 5 is an insulator female buckle made of PVDF or PTFE material, the insulating screw 6 is an insulating screw made of PVDF or PTFE material, and the insulating gasket is an insulating gasket made of PVDF or PTFE material.

[0038] Preferably, the anode in the anode assembly 1 serves as the first anode 11, and the first anode 11 is welded to the anode end flange 12 at a controlled fixed spacing; the cathode in the cathode assembly 2 serves as the first cathode 21, and the first cathode 21 is welded to the cathode end flange 22 at a controlled fixed spacing; the bipolar connection member in the first bipolar assembly 3 serves as the first bipolar connection member 33, the anode in the first bipolar assembly 3 serves as the second anode 31, the second anode 31 is welded to one side of the first bipolar connection member 33 at a controlled fixed spacing, the cathode in the first bipolar assembly 3 serves as the second cathode 32, and the second cathode 32 is welded to the other side of the first bipolar connection member 33 at a controlled fixed spacing; the bipolar connection member in the second bipolar assembly 4 serves as the second bipolar connection member 43, the anode in the second bipolar assembly 4 serves as the third anode 41, the third anode 41 is welded to one side of the second bipolar connection member 43 at a controlled fixed spacing, the cathode in the second bipolar assembly 4 serves as the third cathode 42, and the third cathode 42 is welded to the other side of the second bipolar connection member 43 at a controlled fixed spacing.

[0039] Preferably, the anode is a titanium-based noble metal oxide coated electrode, the cathode is a stainless steel, carbon steel or Hastelloy electrode, the bipolar connection member is a bipolar connection member with a titanium-steel composite structure, and a titanium-based ruthenium oxide coated electrode serving as the anode and a stainless steel, carbon steel or Hastelloy electrode serving as the cathode are respectively welded at both ends of the bipolar connection member.

[0040] Preferably, the anode is a titanium-based ruthenium oxide coated electrode.

[0041] In this embodiment, the anode assembly, the bipolar assembly and the cathode assembly are arranged in sequence along the longitudinal direction of the electrolytic cell in the electrolytic cell, and a plurality of anodes and a plurality of cathodes are arranged in an interdigitated manner along the longitudinal direction of the electrolytic cell body.

[0042] In this embodiment, the bipolar assembly is installed inside the cell body, and then the anode assembly and the cathode assembly are installed at both ends of the cell body; the inner sides of the first flange mounting hole 121 and the second flange mounting hole 221 are respectively connected to the anode side and the cathode side of the cell body, and the outer sides are connected to the positive and negative input terminals of the DC power supply through cables or copper bars.

[0043] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A chlorate electrolysis electrode assembly, characterized in that: It comprises an anode assembly, a bipolar assembly and a cathode assembly arranged in sequence; wherein the anode assembly comprises an anode end flange and a number of anodes arranged at intervals on one side of the anode end flange, the cathode assembly comprises a cathode end flange and a number of cathodes arranged at intervals on one side of the cathode end flange, the bipolar assembly comprises a bipolar connector, a number of anodes arranged at intervals on one side of the bipolar connector, and a number of cathodes arranged at intervals on the other side of the bipolar connector; a number of anodes in the anode assembly and a number of cathodes in the bipolar assembly are arranged alternately, a number of anodes in the bipolar assembly and a number of cathodes in the cathode assembly are arranged alternately, and intervals are provided between adjacent anodes and cathodes after the alternate arrangement.

2. The chlorate electrolysis electrode assembly according to claim 1, characterized in that: There are multiple bipolar components and they are arranged adjacent to each other in sequence from the beginning to the end. A number of anodes and a number of cathodes in the adjacent bipolar components are arranged alternately, and a gap is provided between adjacent anodes and cathodes after the alternate arrangement. A number of anodes in the anode component and a number of cathodes in the first bipolar component in the bipolar component are arranged alternately, and a number of anodes in the last bipolar component in the bipolar component and a number of cathodes in the cathode component are arranged alternately.

3. The chlorate electrolysis electrode assembly according to claim 2, characterized in that: The bipolar assembly comprises bipolar assembly one and bipolar assembly two which are alternately arranged in sequence from the beginning to the end, wherein the first bipolar assembly and the last bipolar assembly are both bipolar assembly one.

4. The chlorate electrolysis electrode assembly according to claim 3, characterized in that: The number of anodes on the anode assembly is N, the number of cathodes on the cathode assembly is N, the number of anodes and the number of cathodes of the bipolar assembly 1 are both N+1, and the number of anodes and the number of cathodes of the bipolar assembly 2 are both N.

5. The chlorate electrolysis electrode assembly according to claim 1, characterized in that: A plurality of mounting connection holes are respectively arranged on the anode and cathode of the bipolar assembly, and insulating screws for connecting and fixing adjacent bipolar assemblies in the plurality of bipolar assemblies, insulating female buckles for connecting and fixing the anode assembly and the bipolar assemblies, and insulating female buckles for connecting and fixing the bipolar assemblies and the cathode assembly are also arranged; the anodes and cathodes between adjacent bipolar assemblies are alternately inserted and arranged to realize the connection and fixation between adjacent bipolar assemblies by insulating screws passing through the mounting connection holes; female buckles in the insulating female buckles are respectively installed in the mounting connection holes on the cathode of the bipolar assembly connected to the anode assembly and in the mounting connection holes on the anode of the bipolar assembly connected to the cathode assembly, and sub buckles in the insulating female buckles are respectively fixed on the anode of the anode assembly and on the cathode of the cathode assembly, and the connection and fixation between the anode assembly and the bipolar assembly and between the bipolar assembly and the cathode assembly are realized by combining the corresponding female buckles and sub buckles in the insulating female buckles.

6. The chlorate electrolysis electrode assembly according to claim 5, characterized in that: The insulating screw is also covered with an insulating gasket and is arranged between adjacent anodes and cathodes that are alternately inserted into each other on the bipolar assembly, and nuts are connected to both ends of the insulating screw; a flange mounting hole 1 is provided on the anode end flange, and a flange mounting hole 2 is provided on the cathode end flange.

7. The chlorate electrolysis electrode assembly according to claim 6, characterized in that: The anode assembly is an anode assembly made of titanium material, the cathode assembly is a cathode assembly made of stainless steel or carbon steel, the bipolar assembly is a bipolar assembly of a titanium-steel composite structure, the insulator buckle is an insulator buckle made of PVDF or PTFE material, the insulating screw is an insulating screw made of PVDF or PTFE material, and the insulating gasket is an insulating gasket made of PVDF or PTFE material.

8. The chlorate electrolysis electrode assembly according to claim 3, characterized in that: The anode in the anode assembly is used as anode one, and the anode one is controlled to be welded on the anode end flange at a fixed interval; the cathode in the cathode assembly is used as cathode one, and the cathode one is controlled to be welded on the cathode end flange at a fixed interval; the bipolar connector in the bipolar assembly one is used as bipolar connector one, the anode in the bipolar assembly one is used as anode two, and the anode two is controlled to be welded on one side of the bipolar connector one at a fixed interval, and the cathode in the bipolar assembly one is used as cathode two, and the cathode two is controlled to be welded on the other side of the bipolar connector one at a fixed interval; the bipolar connector in the bipolar assembly two is used as bipolar connector two, the anode in the bipolar assembly two is used as anode three, and the anode three is controlled to be welded on one side of the bipolar connector two at a fixed interval, and the cathode in the bipolar assembly two is used as cathode three, and the cathode three is controlled to be welded on the other side of the bipolar connector two at a fixed interval.

9. The chlorate electrolysis electrode assembly according to claim 1, characterized in that: The anode is a titanium-based precious metal oxide coated electrode, the cathode is a stainless steel, carbon steel or Hastelloy electrode, the bipolar connector is a bipolar connector of a titanium-steel composite structure, and the two ends of the bipolar connector are respectively welded with a titanium-based ruthenium oxide coated electrode as an anode and a stainless steel, carbon steel or Hastelloy electrode as a cathode.

10. The chlorate electrolysis electrode assembly according to claim 6, characterized in that: The bipolar assembly is installed inside the tank body, and the anode assembly and cathode assembly are installed at both ends of the tank body; the inner sides of the flange mounting hole 1 and the flange mounting hole 2 are respectively connected to the anode side and the cathode side of the tank body, and the outer sides are connected to the positive and negative input terminals of the DC power supply through cables or copper bars.

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